korg/linux
0
0
Fork 0
mirror of https://mirrors.bfsu.edu.cn/git/linux.git synced 2024-11-15 16:24:13 +08:00
Code Issues Packages Projects Releases Wiki Activity

platform/x86: intel_cht_int33fe: Update fusb302 type string, add properties

Browse Source 
The fusb302 driver as merged in staging uses "typec_fusb302" as i2c-id
rather then just "fusb302" and needs us to set a number of device-
properties, adjust the intel_cht_int33fe driver accordingly.

One of the properties set is max-snk-mv which makes the fusb302 driver
negotiate up to 12V charging voltage, which is a bad idea on boards
which are not setup to handle this, so this commit also adds 2 extra
sanity checks to make sure that the expected Whiskey Cove PMIC +
TI bq24292i charger combo, which can handle 12V, is present.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
This commit is contained in:
Hans de Goede 2017-10-11 11:41:21 +02:00 committed by Andy Shevchenko
parent 7d9a6ef558
commit 455e027f33
2 changed files with 48 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
drivers/platform/x86/Kconfig
View File

@ -806,7 +806,7 @@ config ACPI_CMPC
config INTEL_CHT_INT33FE
tristate "Intel Cherry Trail ACPI INT33FE Driver"
depends on X86 && ACPI && I2C
depends on X86 && ACPI && I2C && REGULATOR
---help---
This driver add support for the INT33FE ACPI device found on
some Intel Cherry Trail devices.
@ -817,6 +817,10 @@ config INTEL_CHT_INT33FE
This driver instantiates i2c-clients for these, so that standard
i2c drivers for these chips can bind to the them.
If you enable this driver it is advised to also select
CONFIG_TYPEC_FUSB302=m, CONFIG_CHARGER_BQ24190=m and
CONFIG_BATTERY_MAX17042=m.
config INTEL_INT0002_VGPIO
tristate "Intel ACPI INT0002 Virtual GPIO driver"
depends on GPIOLIB && ACPI

44
drivers/platform/x86/intel_cht_int33fe.c
View File

@ -24,6 +24,7 @@
#include <linux/i2c.h>
#include <linux/interrupt.h>
#include <linux/module.h>
#include <linux/regulator/consumer.h>
#include <linux/slab.h>
#define EXPECTED_PTYPE 4
@ -77,12 +78,21 @@ static const struct property_entry max17047_props[] = {
{ }
};
static const struct property_entry fusb302_props[] = {
PROPERTY_ENTRY_STRING("fcs,extcon-name", "cht_wcove_pwrsrc"),
PROPERTY_ENTRY_U32("fcs,max-sink-microvolt", 12000000),
PROPERTY_ENTRY_U32("fcs,max-sink-microamp", 3000000),
PROPERTY_ENTRY_U32("fcs,max-sink-microwatt", 36000000),
{ }
};
static int cht_int33fe_probe(struct i2c_client *client)
{
struct device *dev = &client->dev;
struct i2c_board_info board_info;
struct cht_int33fe_data *data;
struct i2c_client *max17047;
struct regulator *regulator;
unsigned long long ptyp;
acpi_status status;
int fusb302_irq;
@ -101,6 +111,34 @@ static int cht_int33fe_probe(struct i2c_client *client)
if (ptyp != EXPECTED_PTYPE)
return -ENODEV;
/* Check presence of INT34D3 (hardware-rev 3) expected for ptype == 4 */
if (!acpi_dev_present("INT34D3", "1", 3)) {
dev_err(dev, "Error PTYPE == %d, but no INT34D3 device\n",
EXPECTED_PTYPE);
return -ENODEV;
}
/*
* We expect the WC PMIC to be paired with a TI bq24292i charger-IC.
* We check for the bq24292i vbus regulator here, this has 2 purposes:
* 1) The bq24292i allows charging with up to 12V, setting the fusb302's
* max-snk voltage to 12V with another charger-IC is not good.
* 2) For the fusb302 driver to get the bq24292i vbus regulator, the
* regulator-map, which is part of the bq24292i regulator_init_data,
* must be registered before the fusb302 is instantiated, otherwise
* it will end up with a dummy-regulator.
* Note "cht_wc_usb_typec_vbus" comes from the regulator_init_data
* which is defined in i2c-cht-wc.c from where the bq24292i i2c-client
* gets instantiated. We use regulator_get_optional here so that we
* don't end up getting a dummy-regulator ourselves.
*/
regulator = regulator_get_optional(dev, "cht_wc_usb_typec_vbus");
if (IS_ERR(regulator)) {
ret = PTR_ERR(regulator);
return (ret == -ENODEV) ? -EPROBE_DEFER : ret;
}
regulator_put(regulator);
/* The FUSB302 uses the irq at index 1 and is the only irq user */
fusb302_irq = acpi_dev_gpio_irq_get(ACPI_COMPANION(dev), 1);
if (fusb302_irq < 0) {
@ -127,6 +165,7 @@ static int cht_int33fe_probe(struct i2c_client *client)
} else {
memset(&board_info, 0, sizeof(board_info));
strlcpy(board_info.type, "max17047", I2C_NAME_SIZE);
board_info.dev_name = "max17047";
board_info.properties = max17047_props;
data->max17047 = i2c_acpi_new_device(dev, 1, &board_info);
if (!data->max17047)
@ -134,7 +173,9 @@ static int cht_int33fe_probe(struct i2c_client *client)
}
memset(&board_info, 0, sizeof(board_info));
strlcpy(board_info.type, "fusb302", I2C_NAME_SIZE);
strlcpy(board_info.type, "typec_fusb302", I2C_NAME_SIZE);
board_info.dev_name = "fusb302";
board_info.properties = fusb302_props;
board_info.irq = fusb302_irq;
data->fusb302 = i2c_acpi_new_device(dev, 2, &board_info);
@ -142,6 +183,7 @@ static int cht_int33fe_probe(struct i2c_client *client)
goto out_unregister_max17047;
memset(&board_info, 0, sizeof(board_info));
board_info.dev_name = "pi3usb30532";
strlcpy(board_info.type, "pi3usb30532", I2C_NAME_SIZE);
data->pi3usb30532 = i2c_acpi_new_device(dev, 3, &board_info);